Calendar



(No Model.)

J. WALLIN.

CALENDAR. No. 488,461. Patented Dec. 20,1892.

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CALENDAR.

SPECIFICATION forming part of Letters Patent No. 488,461, dated December 20, 1892.

Application filed May 6, 1892. Serial No. 431,882. (No model.)

To all whom it may concern.-

Be it known that I, J OSEPH WALLIN, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Calendar, of which the following is afull, clear, and exact description.

My invention relates to improvements in perpetual calendars, which are adapted to indicate the name and date of days in a week, and also the months of a year in chronological order, and has for its objects to provide a novel device of the character indicated, which by proper manipulation will display the name of the day, its date, as well as the name of the month, and automatically re-adjust working parts, so as to adapt the mechanism to register correctly for months having an uneven number of days.

To these ends my invention consists in the peculiar construction and combination of parts as is hereinafter described and claimed.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective front view of the device; Fig. 2 is a front view of the calendar with the front wall of its case removed, exposing interior parts, the case being broken away below; Fig. 3 is an enlarged front view of some of the working parts loosely sup ported on the case back, the indicating dials being removed and supports therefor in transverse section on the line 33 in Fig. 4;

Fig. 4 is a vertical section on the line 4:et in Fig. 3 and Fig. 5 is an enlarged diagram of working parts, some broken away and some in section on the line 55 in Fig. 4, showing a particular adjustment of said parts.

There is a preferably rectangular case A, provided for the support within of working parts, which consist essentially of three dials B, C, D, and mechanism connected therewith whereby the dials are rotatably moved upon their supports, as will be explained.

Upon a journal stud bolt a, that is secured to the rear wall of the case A, and projects within the same, two ratchet toothed wheels I) c, are loosely supported, the wheel I), that is in direct connection with the stud bolt, having a hub b, that projects from its radial center rearward and forward of the circular disk composing said Wheel. The forwardly projecting part of the wheel hub 19, is tapered slightly and afiords rotatable support for the other ratchet wheel a as shown in Fig. 4, the

last named wheel being furnished with a tapered hub that is projected on its front side, Whereon the dial B is held firmly at a proper distance from the wheel 0 by a nut c that engages a forward threaded end portion of the hub, and upon the projecting front end portion of the hub b, the dial 0 is mounted and secured by a nut b this dial having a positive attachment upon the hub named, whereby the dial 0 and ratchet wheel I), are adapted to rotate togetherin thesame direction. The dial plate B, is so proportioned diametrically with regard to the dial 0, as to project marginally beyond the latter, and on the front side of this marginal portion thirty-one days of a month are consecutively indicated, by abbreviations of their names as they are grouped in weeks; and for the sake of uniformity, the name abbreviations of thirtyfive days, or five weeks are shown, or spaces are provided for such as are obscured by the dial D, in Fig. 2. The smaller dial plate 0, is marked on the front face near its edge, with thirty-one integers that are consecutively arranged from 1 to 31 inclusive. The ratchet-wheels b c, are of equal diameter and have each thirty-five teeth to correspond with the divisions on the name wheel B. Upon the portion of the ratchet wheel hub b, that projects toward the rear wall of the case A, there is a volute or spiral spring 01 located, one end d of which is secured to the ratchet wheel 19, and the other end portion d that is extended outwardly and passes through a guide loop d on the rear wall of the case A, is connected to said wall as at d in Fig. 3. There is such a tensional force given to the spring d, by its wrapped adjustment upon the hub 19, that the stud d which projects from the rear face of the ratchet wheel 6, will be caused to impinge upon the lug d on the rear wall of the case A, when there is normal stress on the spring, as indicated in Fig. 5.

Below the dials B, O, a journal stud e is forwardly projected from the rear wall of the case A, whereon the ratchet wheel g is loosely supported, said wheel having a forwardly extending hub g, which sustains the dial plate D, that is secured upon its front end; the ratchet wheel named, having twelve teeth, that correspond to the number of months in a year, the name abbreviations of which are consecutively marked upon the dial D, concentric with the edge of the circular disk forming the same.

There is a pull bar E, provided for the proper actuation of the mechanism already described, which bar passes through a slot in the lower wall of the case A, and has a hook it formed on the lower end for its convenient manipulation. The pull bar E isheld loosely in contact with the rear wall of the case A, and in an upright position, by two headed pins 2', 70, that are inserted through the lower slots t" and the upper slot respectively. Upon the upper end of the pull bar E,aspring limb m is formed or secured, and at the free terminal of said limb a transverse finger is formed, the latter being adapted to rest upon and across the peripheries of both the ratchet wheels I) 0, thus providing a spring dog that will engage the teeth of these wheels. At a suitable distance below the spring dog m, another similar spring dog 12, is formed on or aflixed to the edge of the pull bar E, so that a laterally extending finger on its upper end, will rest upon the edge of the ratchet wheel g, and engage its teeth successively when the bar is vertically reciprocate'd. It will be seen that thelower slot in the pull bar E, which is engaged by the pin 1', is formed with two parallel portionsz", 2' that are longitudinal of the bar and are connected at their lower terminals by a transverse slot, the portion t" being longer than theslot 2' and in vertical alignment with the upper slot k, as shown in Fig. 3.

There is a spring detent limb 0, provided for the wheel 0, which successively engages the teeth of this wheel to prevent its turning in the wrong direction, and at p, a bell crank shaped detent arm p is pivoted below the wheel I), with which it has a hooked engagement, said arm having one of its limbs projected in the path of the laterally projected lug p on the pull bar E, so that a depression of said bar will cause the lug to strike the end of the bell crank limb and rock the upper end of its other limb away from the wheel I), with which it is normally held in engagement by a coiled spring 29 that has one end attached to the upright limb of the bell crank and its other end affixed upon the rear wall of the case A.

The pull bar E, is held in elevated adjustment by a spring 1", that is coiled at r, and has one end r secured on the rear wall of the case, the resilient long end portion of said spring bearing against the lower side of an ear r on the bar so as to press it upwardly, and cause the pins '6, 70, to impinge upon the lower ends of the slots they engage with.

The front wall of the case A, is apertured at s, u, o, as shown in Fig. 1, the hole s,b'eing opposite the name abbreviations on, the dial B, and the aperture 10, in front of the row of integers on the dial C, while the third orifice 'v, is adapted to expose to view successively the name abbreviations or full name-of a month as these are brought opposite the hole. The complete device may be hung upright upon a vertical wall or similar support by the loops to, that will engage projecting nails on the wall, and thus maintain the calendar in proper position for ready reference. To arrange the parts for effective service, the dials B, O, and D, should be set to place the proper day name, date, and month-nameabbreviation before the sight holes 8, u, i), and when the day, name, and date-dials 13,0, are to be together shifted, thepull bar'E 'is drawn downwardly until the pin t, strikes the top of the short slot 1' wherein said "pin will be adapted to slide when'the spring dog m is in engagment with the wheels I) c, which operation will move both wheels'one tooth,

and the dials B, O, a corresponding degree, which will place a consecutive day-name-abbreviation and numeral in front of their respective sight holes. After the days of'a month have been successively indicated upon the calendar, as stated, the month-indicating throw the dog m, away from the ratchet wheels b, c, and cause the dog n, to hook upon the teeth of the ratchet wheel g, the downwarddraft of the pull bar moving said ratchet wheel and the dial D simultaneously, so as to expose another name abbreviation on the latter, before the sight hole 1;. When the bar E, is depressed as has been explained, to change the month dial D, the vibration of the bar previously effected, will cause the bell crank 19 to engage its lower limb with the lug p on the pull bar and be rocked thereby, removing the upright limb ofthe bell crank from engagement with the wheel I From the manner in which the coiled spring d is attached to the ratchet wheel b, it will be closer wrapped as this wheel is rotatably moved, so that its tensional force will be adapted to instantly rotate the wheel b,'in an opposite direction when it is released, thereby returning the name dial B, to its starting point; the reverse movement being arrested when the stud 01 on the wheel I), abuts upon the lug cl", as before explained, the wheel 0, being held by its detent 0, from a reverse movement; and when the dials are in proper position for the beginning. of the new month, the pull bar E is again adjusted to permit it to move the dials B, O, for indi cation of successive days, as before explained.

Having thus fully described my invention, I claim as new, and desire to secure by Letters Patent-- 1. In a calendar, the combination with a case, three dials mounted to rotate in the case and expose indications on their faces, and ratchet wheels for the dials, of a pull bar in the case adapted to engage two of the ratchet wheels and move two of the dials together when vertically reciprocated, and to rotate the other dial and its ratchet Wheel when laterally swung below the lower end of the case, and then reciprocated, substantially as de scribed.

2. In a calendar, the combination with a case, a day name dial and a day date dial each rotatable on a journal stud in the case, a ratchet wheel for each dial on said studs, and a detent for each wheel, of a pull bar vertically movable and reciprocable in the case, and a spring dog on the upper end of said bar adapted to actuate both of said ratchet wheels and their dials, substantially as described.

3. In a calendar, the combination with a case, a journal stud projected Within the upper part of the case, two ratchet Wheels on said stud and having an equal number of teeth, one wheel being loose on the hub of the other wheel, a day name-dial secured on said hub projection near its outer end, and a datedial secured on the hub projection of the other ratchet wheel, of a spring detent pawl for each ratchet wheel, a vibratable pull bar adapted to slide vertically in the case, and a spring dog on the top end of the bar adapted to hook onto both ratchet wheels, substantially as described.

4. In a calendar, the combination with a case apertured in its front at three points, a journal stud Within the upper part of the case, a day-name dial and a day-date dial on said stud, a ratchet wheel for the name-dial and having a projected hub, a ratchet wheel for the date-dial rotatable on the hub of the other ratchet wheel, a spring detent for each ratchet Wheel, and a month dial and a ratchet wheel for said dial both rotatable on a stud within the lower part of the case, of an upright pull bar supported to slide and vibrate in the case, and spring dogs adapted to actuate the dials when reciprocated in connection with the ratchet wheels bearing said dials, substantially as described.

5. In a calendar, the combination with a rectangular case, apertured at three points in its front Wall, two spaced journal studs with in the case, two ratchet wheels with hubs one mounted on the other and both rotatable on the upper journal stud, a spring pawl for one of the ratchet wheels, a spring-pressed bell crank, a detent arm on said bell crank engaging the other ratchet wheel, a retracting coiled spring'for the wheel engaged by the bell crank detent, a dial plate for each of said ratchet wheels and movable therewith, a ratchetwheel on the lower journal stud, and a dial plate secured on the hub of said wheel, of an upright pull bar provided with parallel slots near its lower end, joined by a transverse slot, a single slot near the upper end of said bar, two pins seated in the case and engaging said slots, anupper and a lower spring dog on the pull bar, adapted to engage the ratchet wheels, and a lug near the upper end of the pull bar adapted to rock the bell crank detent, substantially as described.

JOSEPH WALLIN. Witnesses:

FREDRIK PETERSON, CARL LIND. 

